This thesis presents a system for wireless communication powertrains, managed by a microcontroller. It describes complete history of system development and extension of the tasks which the system operates. The reason for developing such a system was inflexible choice between already-made simple PLC systems and the price for adapted, customized systems. The thesis describes the production of printed circuit board, the program for the corresponding microcontroller and a wireless connection to transmit remote control receiver module on the panel.
Wireless communication between the transmitter and receiver on a PCB is carried out on the FM radio frequency of 433 MHz and on 8 channels. The microcontroller, which manages the entire system is AVR ATMEGA32 and contains 32 programmable inputs or outputs, 8 individual ADC converters and two timers. All significant statuses and inputs are shown on the 4x20 line LCD display for easy program diagnostics. The program for the microcontroller is written in Bascom AVR of the company MCS Electronics, which contains a BASIC compiler for AVR family of microcontrollers.
The power section consists of relay outputs, which can control devices with a current limitation of 8 A. Two sets of two relays are also connected to each other by a mechanical protection against the simultaneous switching, which comes into play when the motor rotation is in both directions. The input power section is entirely bonded via optocoupler, which will further protect the microcontroller against destruction by the input sensors, switches and other elements.